surra usrra srura rsura ursra rusra surra usrra srura rsura ursra rusra srrua rsrua srrua rsrua rrsua rrsua urrsa rursa urrsa rursa rrusa rrusa surar usrar sruar rsuar ursar rusar suarr usarr saurr asurr uasrr ausrr sraur rsaur sarur asrur rasur arsur urasr ruasr uarsr aursr rausr arusr surar usrar sruar rsuar ursar rusar suarr usarr saurr asurr uasrr ausrr sraur rsaur sarur asrur rasur arsur urasr ruasr uarsr aursr rausr arusr srrau rsrau srrau rsrau rrsau rrsau sraru rsaru sarru asrru rasru arsru sraru rsaru sarru asrru rasru arsru rrasu rrasu rarsu arrsu rarsu arrsu urras ruras urras ruras rruas rruas urars ruars uarrs aurrs raurs arurs urars ruars uarrs aurrs raurs arurs rraus rraus rarus arrus rarus arrus
Note: these 'words' (valid or invalid) are all the permutations of the word surra. These words are obtained by scrambling the letters in surra.